KR20040031333A - Stroke detecting apparatus and method for reciprocating compressor - Google Patents

Stroke detecting apparatus and method for reciprocating compressor Download PDF

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Publication number
KR20040031333A
KR20040031333A KR1020020060730A KR20020060730A KR20040031333A KR 20040031333 A KR20040031333 A KR 20040031333A KR 1020020060730 A KR1020020060730 A KR 1020020060730A KR 20020060730 A KR20020060730 A KR 20020060730A KR 20040031333 A KR20040031333 A KR 20040031333A
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South Korea
Prior art keywords
stroke
electromotive force
motor
counter electromotive
detecting
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KR1020020060730A
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Korean (ko)
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KR100480118B1 (en
Inventor
유재유
이철웅
성지원
이혁
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엘지전자 주식회사
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Priority to KR10-2002-0060730A priority Critical patent/KR100480118B1/en
Priority to CNB031015670A priority patent/CN100335786C/en
Priority to DE10302037A priority patent/DE10302037A1/en
Priority to BRPI0300272A priority patent/BRPI0300272B1/en
Priority to JP2003020720A priority patent/JP4414143B2/en
Priority to US10/385,475 priority patent/US6930462B2/en
Publication of KR20040031333A publication Critical patent/KR20040031333A/en
Application granted granted Critical
Publication of KR100480118B1 publication Critical patent/KR100480118B1/en

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
    • F04B49/12—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00 by varying the length of stroke of the working members
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
    • F04B49/06—Control using electricity
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B35/00—Piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for
    • F04B35/04—Piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for the means being electric
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B35/00—Piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for
    • F04B35/04—Piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for the means being electric
    • F04B35/045—Piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for the means being electric using solenoids
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B2201/00—Pump parameters
    • F04B2201/02—Piston parameters
    • F04B2201/0206—Length of piston stroke
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B2203/00—Motor parameters
    • F04B2203/04—Motor parameters of linear electric motors
    • F04B2203/0401—Current
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B2203/00—Motor parameters
    • F04B2203/04—Motor parameters of linear electric motors
    • F04B2203/0402—Voltage
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B2207/00—External parameters
    • F04B2207/04—Settings
    • F04B2207/046—Settings of length of piston stroke
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B2219/00—Program-control systems
    • G05B2219/30—Nc systems
    • G05B2219/43—Speed, acceleration, deceleration control ADC
    • G05B2219/43182—Speed control with feedback and as reference the programmed value

Abstract

PURPOSE: A device and a method for detecting the stroke of a reciprocating compressor are provided to remove a deviation generated by resistance and inductance by estimating the stroke by a counter electromotive force, thereby reducing the stroke estimation error. CONSTITUTION: A device for detecting the stroke of a reciprocating compressor includes a counter electromotive force detecting element(10) for detecting a counter electromotive force for a predetermined section in which no current is flowing in a motor. A stroke estimating element(20) operates a stroke estimation value by the counter electromotive force. A stroke controller(30) compares the stroke estimation value with a stroke command value to vary a voltage applied to the motor according to a difference between the values, thereby controlling the stroke.

Description

왕복동식 압축기의 스트로크 검출장치 및 방법{STROKE DETECTING APPARATUS AND METHOD FOR RECIPROCATING COMPRESSOR}Stroke detection device and method of reciprocating compressors {STROKE DETECTING APPARATUS AND METHOD FOR RECIPROCATING COMPRESSOR}

본 발명은 왕복동식 압축기의 스트로크 검출장치 및 방법에 관한 것으로, 역기전력을 이용하여 스트로크를 추정함으로써, 레지스턴스와 인덕턴스에 의해 발생하는 편차를 제거하여 스트로크 추정오차를 감소시키도록 한 왕복동식 압축기의 스트로크 검출장치 및 방법에 관한 것이다.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a stroke detection apparatus and method for a reciprocating compressor. The stroke detection of a reciprocating compressor reduces the stroke estimation error by eliminating the deviation caused by resistance and inductance by estimating the stroke using counter electromotive force. An apparatus and method are provided.

도1은 종래 왕복동식 압축기의 운전제어장치에 대한 구성을 보인 블록도로서, 이에 도시된 바와같이 모터에 인가되는 모터전류를 검출하는 전류검출부(4)와; 모터에 인가되는 모터 전압을 검출하는 전압검출부(3)와; 상기 검출된 모터 전류와 모터 전압 및 모터 파라미터에 의해, 스트로크를 추정하는 스트로크 추정기(5)와; 상기 스트로크 추정치와 스트로크 지령치를 비교하여 그에 따른 차이신호를 출력하는 비교기(1)와; 상기 차이신호에 따라, 모터에 인가되는 전압을 가변하여 스트로크를 제어하는 스트로크 제어기(2)로 구성되며, 이와같은 종래 장치의 동작을 설명한다.1 is a block diagram showing a configuration of an operation control apparatus of a conventional reciprocating compressor, and as shown therein, a current detection unit 4 for detecting a motor current applied to a motor; A voltage detector (3) for detecting a motor voltage applied to the motor; A stroke estimator (5) for estimating a stroke based on the detected motor current, motor voltage and motor parameters; A comparator (1) for comparing the stroke estimate value with the stroke command value and outputting a difference signal accordingly; In accordance with the difference signal, a stroke controller 2 which controls the stroke by varying the voltage applied to the motor is described. The operation of such a conventional apparatus will be described.

먼저, 전류검출부(4)는 모터에 인가되는 모터전류를 검출하고, 전압검출부 (3)는 모터에 인가되는 모터전압을 검출한다.First, the current detector 4 detects a motor current applied to the motor, and the voltage detector 3 detects a motor voltage applied to the motor.

이때, 스트로크 추정기(5)는, 상기 모터전류와 모터전압 및 모터 파라미터를 하기의 수학식에 적용하여 스트로크추정치를 연산한후, 그 스트로크 추정치를 비교기(1)에 인가한다.At this time, the stroke estimator 5 applies the motor current, the motor voltage, and the motor parameter to the following equation to calculate a stroke estimate, and then applies the stroke estimate to the comparator 1.

[수학식][Equation]

여기서, R:레지스턴스Where R: resistance

L:인덕턴스L: Inductance

α:역기전력α: counter electromotive force

이에 따라, 상기 비교기(1)는 상기 스토로크 추정치와 상기 스트로크 지령치를 비교하여 그에 따른 차이신호를 스트로크 제어기(2)에 인가하고, 이에 의해 상기 스트로크 제어기(2)는 모터에 인가되는 전압을 가변하여 스트로크를 제어한다.Accordingly, the comparator 1 compares the stroke estimate and the stroke command value and applies a difference signal to the stroke controller 2 according to which the stroke controller 2 varies the voltage applied to the motor. To control the stroke.

즉, 상기 스트로크 제어기(2)는, 도2에서 보는 바와같이, 스트로크 지령치가 스트로크 추정치보다 크면 모터 인가전압을 증가시키고, 스트로크 지령치가 스트로크 추정치보다 작으면 모터 인가전압을 감소시킨다.That is, as shown in Fig. 2, the stroke controller 2 increases the motor applied voltage when the stroke command value is larger than the stroke estimate value and decreases the motor applied voltage when the stroke command value is smaller than the stroke estimate value.

상술한 바와같이, 왕복동식 압축기의 스트로크를 검출하는 방법은, 모터 파라미터(모터상수, 레지스턴스, 인덕턴스등)를 모두 이용하여 스트로크를 추정하여 스트로크 제어를 수행하므로, 그 모터 파라미터의 편차 및 비선형성으로 인하여 추정되는 스트로크의 오차가 커지는 문제점이 있다.As described above, the stroke detection method of the reciprocating compressor performs stroke control by estimating the stroke using all the motor parameters (motor constants, resistance, inductance, etc.). There is a problem that the error of the estimated stroke is large.

본 발명은 상기와 같은 문제점을 해결하기 위하여 안출된 것으로, 역기전력을 이용하여 스트로크를 추정함으로써, 레지스턴스와 인덕턴스에 의해 발생하는 편차를 제거하여 스트로크 추정오차를 감소시키도록 한 왕복동식 압축기의 스트로크 검출장치 및 방법을 제공함에 그 목적이 있다.The present invention has been made to solve the above problems, the stroke detection device of the reciprocating compressor to reduce the stroke estimation error by eliminating the deviation caused by the resistance and inductance by estimating the stroke using the counter electromotive force And to provide a method.

도1은 종래 왕복동식 압축기의 운전제어장치에 대한 구성을 보인 블록도.1 is a block diagram showing a configuration for a driving control apparatus of a conventional reciprocating compressor.

도2는 종래 왕복동식 압축기의 운전제어방법에 대한 동작 흐름도.2 is a flowchart illustrating an operation control method of a conventional reciprocating compressor.

도3은 본 발명 왕복동식 압축기의 스트로크 검출장치에 대한 구성을 보인 블록도.Figure 3 is a block diagram showing the configuration of the stroke detection device of the reciprocating compressor of the present invention.

도4는 본 발명 왕복동식 압축기의 스트로크 검출방법에 대한 동작흐름도.Figure 4 is a flow chart of the stroke detection method of the reciprocating compressor of the present invention.

도5는 도4에 있어서, 역기전력 검출 시점을 보인 파형도.FIG. 5 is a waveform diagram showing a counter electromotive force detection time point in FIG. 4; FIG.

*****도면의 주요부분에 대한 부호의 설명********** Description of the symbols for the main parts of the drawings *****

10:역기전력 검출부20:스트로크추정기10: counter electromotive force detecting unit 20: stroke estimator

30:비교기40:스트로크제어기30: comparator 40: stroke controller

상기와 같은 목적을 달성하기 위한 본 발명은, 왕복동식 압축기에 있어서, 모터에 전류가 흐르지 않는 일정 구간동안에, 역기전력을 검출하는 역기전력검출수단과; 상기 역기전력을 이용하여 스트로크 추정치를 연산하는 스트로크 추정수단과; 상기 스트로크 추정치와 스트로크 지령치를 비교하여 그에 따라 모터에 인가되는 전압을 가변하여 스트로크를 제어하는 스트로크 제어수단을 포함하는 것을 특징으로 한다.According to an aspect of the present invention, there is provided a reciprocating compressor comprising: a counter electromotive force detecting means for detecting a counter electromotive force during a period in which a current does not flow in a motor; Stroke estimation means for calculating a stroke estimate using the counter electromotive force; And a stroke control means for comparing the stroke estimated value with the stroke command value and controlling the stroke by varying the voltage applied to the motor accordingly.

상기와 같은 목적을 달성하기 위한 본 발명은, 스트로크 제어를 수행하다가, 전류 차단 시점이면, 전류를 차단한후, 모터의 양단전압을 검출하여 역기전력을 구하는 제1 과정과; 상기 역기전력으로 스트로크 추정치를 연산하는 제2 과정과; 상기 스트로크 추정치와 스트로크 지령치를 비교하여 모터에 인가되는 전압을 가변하여 스트로크를 제어하는 제3 과정으로 수행함을 특징으로 한다.The present invention for achieving the above object, the first step of performing a stroke control, when the current is cut off, after the current is cut off, to detect the reverse electromotive force by detecting the voltage across the motor; Calculating a stroke estimate with the counter electromotive force; And a third process of controlling the stroke by varying the voltage applied to the motor by comparing the stroke estimated value with the stroke command value.

이하, 본 발명에 의한 왕복동식 압축기의 운전제어장치 및 방법에 대한 작용과 효과를 첨부한 도면을 참조하여 상세히 설명한다.Hereinafter, with reference to the accompanying drawings, the operation and effects of the operation control apparatus and method of the reciprocating compressor according to the present invention will be described in detail.

우선,본 발명은, 왕복동식 압축기에서 발생하는 역기전력을 이용하여 스트로크를 추정하면, 레지스턴스와 인덕턴스에 의한 편차를 고려하지 않아도 되고, 이로 인해 스트로크 추정편차가 줄어들게 됨을 근거로 하여 착안하였음을 밝혀두는 바이다.First of all, the present invention has been conceived based on the fact that, when the stroke is estimated using the counter electromotive force generated in the reciprocating compressor, the deviation due to the resistance and the inductance does not have to be taken into account, thereby reducing the stroke estimation deviation. .

도3은 본 발명 왕복동식 압축기의 운전제어장치의 구성을 보인 블록도로서, 이에 도시한 바와같이 모터에 전류가 흐르지 않는 일정 구간동안에, 역기전력을 검출하는 역기전력검출부(10)와; 상기 역기전력검출부(10)에서 검출된 역기전력을 이용하여 스트로크 추정치를 연산하는 스트로크 추정기(20)와; 스트로크 지령치와 스트로크추정치를 비교하여 그에 따른 차이신호를 출력하는 비교기(30)와; 상기 비교기(30)의 차이신호에 의해, 모터에 인가되는 전압을 가변하여 스트로크를 제어하는 스트로크 제어기(40)로 구성한다.Figure 3 is a block diagram showing the configuration of the operation control apparatus of the reciprocating compressor of the present invention, as shown in the back electromotive force detection unit 10 for detecting a counter electromotive force during a period in which no current flows in the motor; A stroke estimator (20) for calculating a stroke estimate using the back electromotive force detected by the back electromotive force detector (10); A comparator 30 for comparing the stroke command value with the stroke estimate value and outputting a difference signal according to the stroke command value; In accordance with the difference signal of the comparator 30, the voltage applied to the motor is varied by the stroke controller 40 to control the stroke.

도4는 본 발명 왕복동식 압축기의 운전제어방법에 대한 동작흐름도로서, 이에 도시한 바와같이 스트로크 제어를 수행하다가, 전류 차단 시점이면, 전류를 차단한후, 모터의 양단전압을 검출하여 역기전력을 구하는 제1 과정과; 상기 역기전력으로 스트로크 추정치를 연산하는 제2 과정과; 상기 스트로크 추정치와 스트로크 지령치를 비교하여 모터에 인가되는 전압을 가변하여 스트로크를 제어하는 제3 과정으로 이루어지며, 이와같은 본 발명의 동작을 설명한다.4 is an operation flowchart of the operation control method of the reciprocating compressor according to the present invention. A first process; Calculating a stroke estimate with the counter electromotive force; Comprising a third process of controlling the stroke by varying the voltage applied to the motor by comparing the stroke estimate value and the stroke command value, the operation of the present invention will be described.

먼저, 역기전력 검출부(10)는, 모터에 전류가 흐르지 않는 일정 구간동안에 역기전력을 검출하는데, 즉 역기전력을 검출하기 위해, 일정 주기동안 모터에 흐르는 전류를 차단한다.First, the counter electromotive force detection unit 10 detects the counter electromotive force during a predetermined period in which no current flows in the motor, that is, in order to detect the counter electromotive force, cuts off the current flowing through the motor for a predetermined period.

이때, 역기전력 검출부(10)는, 하기의 수학식으로 역기전력을 검출한다.At this time, the counter electromotive force detection unit 10 detects the counter electromotive force by the following equation.

[수학식][Equation]

역기전력= Back EMF =

여기서,:모터상수here, Motor Constant

:피스톤 속도 Piston Speed

이때, 스트로크 추정기(20)는, 상기 역기전력을 아래의 수학식에 적용하여 스트로크 추정치를 연산한후,그 스트로크 추정치를 비교기(30)에 인가한다.At this time, the stroke estimator 20 applies the counter electromotive force to the following equation to calculate a stroke estimate, and then applies the stroke estimate to the comparator 30.

[수학식][Equation]

이에 따라, 상기 비교기(30)는 상기 스토로크 추정치와 상기 스트로크 지령치를 비교하여 그에 따른 차이신호를 스트로크 제어기(40)에 인가하고, 이에 의해상기 스트로크 제어기(40)는 모터에 인가되는 전압을 가변하여 스트로크를 제어한다.Accordingly, the comparator 30 compares the stroke estimate with the stroke command value and applies a difference signal to the stroke controller 40 according to which the stroke controller 40 varies the voltage applied to the motor. To control the stroke.

즉, 상기 스트로크 제어기(40)는, 스트로크 지령치가 스트로크 추정치보다 크면 모터 인가전압을 증가시키고, 스트로크 지령치가 스트로크 추정치보다 작으면 모터 인가전압을 감소시킨다.That is, the stroke controller 40 increases the motor applied voltage when the stroke command value is larger than the stroke estimate value and decreases the motor applied voltage when the stroke command value is smaller than the stroke estimate value.

보다 상세하게, 도4를 참조하여 본 발명을 설명하면, 우선 스트로크 제어를 수행하면서, 도5와 같이, 역기전력을 검출하기 위한 전류 차단 시점이면, 전류를 차단한후, 모터의 양단전압을 검출하여 역기전력을 검출한다.More specifically, the present invention will be described with reference to FIG. 4. First, while performing stroke control, as shown in FIG. 5, when the current is cut off time for detecting the counter electromotive force, the current is cut off, and then the voltage between the motors is detected. Detect back EMF

그 다음, 상기 역기전력을 이용하여 스트로크 추정치를 연산한후, 그 스트로크 추정치와 스트로크지령치를 비교하여 그에 따라 모터에 인가되는 전압을 가변함으로써 스트로크를 제어한다.Then, after calculating the stroke estimate using the counter electromotive force, the stroke is controlled by comparing the stroke estimate with the stroke command value and varying the voltage applied to the motor accordingly.

즉, 상기 스트로크 지령치가 스트로크 추정치 보다 크면 모터 인가전압을 감소시키고, 스트로크 지령치가 스트로크 추정치보다 작으면 모터 인가전압을 증가시킨다.That is, the motor applied voltage is decreased when the stroke command value is larger than the stroke estimate value, and the motor applied voltage is increased when the stroke command value is smaller than the stroke estimate value.

즉, 본 발명은 모터에 일정시간 동안 전류를 차단한후, 그 전류 차단 구간에 역기전력을 검출하여 스트로크를 추정함으로써, 모터 파라미터중 인덕턴스와 레지스턴스의 편차를 고려하지 않아도 되고, 이로 인해 스트로크의 추정 편차가 줄어들게 된다.That is, according to the present invention, after the current is cut off for a certain time by the motor, the counter electromotive force is detected and the stroke is estimated in the current interruption period, so that the deviation of the inductance and the resistance of the motor parameters is not considered, and thus the estimated deviation of the stroke. Will be reduced.

상기 본 발명의 상세한 설명에서 행해진 구체적인 실시 양태 또는 실시예는 어디까지나 본 발명의 기술 내용을 명확하게 하기 위한 것으로 이러한 구체적 실시예에 한정해서 협의로 해석해서는 안되며, 본 발명의 정신과 다음에 기재된 특허 청구의 범위내에서 여러가지 변경 실시가 가능한 것이다.The specific embodiments or examples made in the detailed description of the present invention are intended to clarify the technical contents of the present invention to the extent that they should not be construed as limited to these specific embodiments and should not be construed in consultation. Various changes can be made within the scope of.

이상에서 상세히 설명한 바와같이 본 발명은, 모터에 일정시간 동안 전류를 차단한후, 그 전류 차단 구간에 역기전력을 검출하여 스트로크를 추정함으로써, 모터 파라미터중 인덕턴스와 레지스턴스의 편차를 고려하지 않으므로 스트로크의 추정 편차가 감소되는 효과가 있다.As described in detail above, the present invention cuts off the current for a predetermined time, and then detects back electromotive force in the current interruption interval, and estimates the stroke. There is an effect that the deviation is reduced.

Claims (6)

왕복동식 압축기에 있어서,In a reciprocating compressor, 모터에 전류가 흐르지 않는 일정 구간동안에, 역기전력을 검출하는 역기전력검출수단과;Back electromotive force detection means for detecting back electromotive force during a period in which no current flows in the motor; 상기 역기전력을 이용하여 스트로크 추정치를 연산하는 스트로크 추정수단과;Stroke estimation means for calculating a stroke estimate using the counter electromotive force; 상기 스트로크 추정치와 스트로크 지령치를 비교하여 그에 따라 모터에 인가되는 전압을 가변하여 스트로크를 제어하는 스트로크 제어수단을 포함하는 것을 특징으로 하는 왕복동식 압축기의 스트로크 검출장치.And stroke control means for controlling the stroke by comparing the stroke estimated value with the stroke command value and varying the voltage applied to the motor accordingly. 제1 항에 있어서, 역기전력 검출수단은, 역기전력을, 모터에 흐르는 전류를 한주기 또는 그 이상 주기동안 차단한후, 모터의 양단전압을 검출하여 구하는 것을 특징으로 하는 왕복동식 압축기의 스트로크 검출장치.The stroke detection apparatus of a reciprocating compressor according to claim 1, wherein the counter electromotive force detecting means detects and obtains a voltage between both ends of the motor after the counter electromotive force is interrupted for one or more cycles of the current flowing through the motor. 제1 항에 있어서, 역기전력 검출수단은, 하기의 수학식에 의해, 역기전력을 검출하는 것을 특징으로 하는 왕복동식 압축기의 스트로크 검출장치.The stroke detection apparatus of claim 1, wherein the counter electromotive force detecting means detects the counter electromotive force by the following equation. [수학식][Equation] 역기전력= Back EMF = 여기서,:모터상수here, Motor Constant :피스톤 속도 Piston Speed 제1 항에 있어서, 스트로크 추정수단은, 하기의 수학식에 의해, 스트로크 추정치를 연산하는 것을 특징으로 하는 왕복동식 압축기의 스트로크 검출방법.The stroke detection method of claim 1, wherein the stroke estimating means calculates a stroke estimate value by the following equation. [수학식][Equation] 왕복동식 압축기에 있어서,In a reciprocating compressor, 스트로크 제어를 수행하다가, 전류 차단 시점이면, 전류를 차단한후, 모터의 양단전압을 검출하여 역기전력을 구하는 제1 과정과;Performing a stroke control, and when the current is cut off, after the current is cut off, detecting a counter electromotive force by detecting a voltage across the motor; 상기 역기전력으로 스트로크 추정치를 연산하는 제2 과정과;Calculating a stroke estimate with the counter electromotive force; 상기 스트로크 추정치와 스트로크 지령치를 비교하여 모터에 인가되는 전압을 가변하여 스트로크를 제어하는 제3 과정으로 수행함을 특징으로 하는 왕복동식 압축기의 스트로크 검출방법.And a third process of controlling the stroke by varying the voltage applied to the motor by comparing the stroke estimate value with the stroke command value. 제 5항에 있어서, 스트로크 추정치는, 하기의 수학식에 의해 연산되는 것을 특징으로 하는 왕복동식 압축기의 스트로크 검출방법.6. The stroke detection method according to claim 5, wherein the stroke estimate is calculated by the following equation. [수학식][Equation]
KR10-2002-0060730A 2002-10-04 2002-10-04 Stroke detecting apparatus and method for reciprocating compressor KR100480118B1 (en)

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Families Citing this family (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100556776B1 (en) * 2003-11-26 2006-03-10 엘지전자 주식회사 Driving control apparatus and method for reciprocating compressor
KR100608690B1 (en) * 2004-09-11 2006-08-09 엘지전자 주식회사 Driving control apparatus and method for reciprocating compressor
KR100631566B1 (en) * 2005-04-06 2006-10-11 엘지전자 주식회사 Stroke control apparatus and method for reciprocating compressor
US7408310B2 (en) * 2005-04-08 2008-08-05 Lg Electronics Inc. Apparatus for controlling driving of reciprocating compressor and method thereof
KR100690663B1 (en) * 2005-05-06 2007-03-09 엘지전자 주식회사 Driving control apparatus and method for capacity variable type reciprocating compressor
KR101234825B1 (en) * 2005-05-13 2013-02-20 삼성전자주식회사 Apparatus and method for controlling linear compressor
KR100739165B1 (en) * 2006-04-13 2007-07-13 엘지전자 주식회사 Driving control apparatus and method for linear compressor
KR100806099B1 (en) * 2006-04-14 2008-02-21 엘지전자 주식회사 Driving control apparatus and method for linear compressor
BRPI1100026A2 (en) * 2011-01-26 2013-04-24 Whirlpool Sa reciprocal compressor system and control method
US10502201B2 (en) * 2015-01-28 2019-12-10 Haier Us Appliance Solutions, Inc. Method for operating a linear compressor
US10208741B2 (en) * 2015-01-28 2019-02-19 Haier Us Appliance Solutions, Inc. Method for operating a linear compressor
US20160215770A1 (en) * 2015-01-28 2016-07-28 General Electric Company Method for operating a linear compressor
US10174753B2 (en) 2015-11-04 2019-01-08 Haier Us Appliance Solutions, Inc. Method for operating a linear compressor
CN105587652B (en) * 2016-02-19 2018-07-03 珠海格力节能环保制冷技术研究中心有限公司 Linear compressor and its control method, device, electric appliance
US10063170B2 (en) * 2016-06-15 2018-08-28 Texas Instruments Incorporated Methods and apparatus for robust and efficient stepper motor BEMF measurement
US10830230B2 (en) 2017-01-04 2020-11-10 Haier Us Appliance Solutions, Inc. Method for operating a linear compressor
CN107654359A (en) * 2017-07-28 2018-02-02 青岛海尔智能技术研发有限公司 Reciprocating compressor stroke anticollision control method, reciprocating compressor and refrigerator
US10670008B2 (en) 2017-08-31 2020-06-02 Haier Us Appliance Solutions, Inc. Method for detecting head crashing in a linear compressor
US10641263B2 (en) 2017-08-31 2020-05-05 Haier Us Appliance Solutions, Inc. Method for operating a linear compressor

Family Cites Families (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5342176A (en) * 1993-04-05 1994-08-30 Sunpower, Inc. Method and apparatus for measuring piston position in a free piston compressor
EP0652632B1 (en) * 1993-10-08 2002-02-27 Sawafuji Electric Co., Ltd. Power supply for vibrating compressors
DE19628585C2 (en) * 1996-07-16 2001-12-20 Danfoss As Method for commutating a brushless motor and supply circuit for a brushless motor
KR100189122B1 (en) * 1996-09-14 1999-06-01 윤종용 Sensorless bldc motor control method
KR100301827B1 (en) * 1998-04-08 2002-02-19 구자홍 Driving method of compressor using for sensorless BLDC Motor
KR100301828B1 (en) * 1998-04-08 2002-02-19 구자홍 Method for operating compressor with sensorless bldc motor
WO2000016482A1 (en) * 1998-09-16 2000-03-23 Airxcel, Inc. Frequency control of linear motors
DE19952578B4 (en) * 1998-11-04 2005-11-24 Lg Electronics Inc. Apparatus and method for controlling a linear compressor
DE19918930B4 (en) * 1999-04-26 2006-04-27 Lg Electronics Inc. Power control device for a linear compressor and method
JP2002044977A (en) * 2000-07-25 2002-02-08 Sanyo Electric Co Ltd Drive device for linear compressor
US6520746B2 (en) * 2000-09-27 2003-02-18 Lg Electronics Inc. Apparatus and method for controlling operation of reciprocating compressor
KR100367604B1 (en) * 2000-11-28 2003-01-10 엘지전자 주식회사 Stroke control method for linear compressor
KR100378814B1 (en) * 2000-11-28 2003-04-07 엘지전자 주식회사 Driving circuit for linear compressor
KR100378815B1 (en) * 2000-11-28 2003-04-07 엘지전자 주식회사 Stroke shaking detection apparatus and method for linear compressor
KR100367606B1 (en) * 2000-11-29 2003-01-14 엘지전자 주식회사 Driving control apparatus for linear compressor in using vector
KR100367605B1 (en) * 2000-11-29 2003-01-14 엘지전자 주식회사 Driving control apparatus for linear compressor using pattern recognition
US6537034B2 (en) * 2000-11-29 2003-03-25 Lg Electronics Inc. Apparatus and method for controlling operation of linear compressor
JP2002199773A (en) * 2000-12-27 2002-07-12 Sanden Corp Drive control method for compressor motor and inverter for driving compressor
KR100498302B1 (en) * 2000-12-27 2005-07-01 엘지전자 주식회사 Copacity variable motor for linear compressor
US6623246B2 (en) * 2001-04-13 2003-09-23 Lg Electronics Inc. Apparatus and method for controlling operation of linear motor compressor
BRPI0113565B1 (en) * 2001-06-21 2016-07-26 Lg Electronics Inc apparatus and method for controlling piston position in reciprocating compressor
KR100408068B1 (en) * 2001-07-31 2003-12-03 엘지전자 주식회사 Stroke comtrol apparatus for reciprocating compressor
US6682310B2 (en) * 2001-08-01 2004-01-27 Lg Electronics Inc. Apparatus and method for controlling operation of reciprocating motor compressor
KR100480117B1 (en) * 2002-10-04 2005-04-07 엘지전자 주식회사 Stroke conpensation apparatus and method for reciprocating compressor
KR100486582B1 (en) * 2002-10-15 2005-05-03 엘지전자 주식회사 Stroke detecting apparatus and method for reciprocating compressor

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